Earth

NOAA’s New Weather Satellite is Operational, and its Pictures of Earth are Gorgeous

You'd have to be in some kind of sense-of-wonder-repressed coma not to appreciate satellite images of Earth. If you are,…

1 month ago

Earth’s Water is 4.5 Billion Years Old

The origin of Earth's water has been an enduring mystery. There are different hypotheses and theories explaining how the water…

1 month ago

Asteroids Didn’t Create the Moon’s Largest Craters. Left-Over Planetesimals Did

The Moon's pock-marked surface tells the story of its history. It's marked by over 9,000 impact craters, according to the…

2 months ago

OK, Artemis. Now You’re Just Showing Off. A Stunning View of the Moon Eclipsing Earth From the Orion Spacecraft

Have you ever seen a lunar eclipse of the Earth from the far side of the Moon? Now we have.…

2 months ago

Mars Once had Enough Water for a Planet-Wide Ocean 300 Meters Deep

New research has shown that Mars may have been covered in a worldwide ocean when Earth was still covered in…

2 months ago

What’s the Best Mix of Oceans to Land for a Habitable Planet?

Earth is about 29% land and 71% oceans. How significant is that mix for habitability? What does it tell us…

2 months ago

Volcanoes are the worst. They’ve caused extinctions on Earth, and probably killed Venus

Is there anything good about volcanoes? They can be violent, dangerous, and unpredictable. For modern humans, volcanoes are mostly an…

2 months ago

Three New Potentially Hazardous Asteroids Discovered, Including a big one That Measures 1.5 km Across

An asteroid 1.5 km across is no joke. Even a much smaller one, about the size of a house, can…

3 months ago

The Most Devastating Solar Storms in History are Scoured Into Tree Rings

Trees are like sentinels that preserve a record of shifting climates. Their growth rings hold that history and dendrochronology studies…

3 months ago

How Dangerous are Nearby Supernovae to Life on Earth?

Life and supernovae don't mix. From a distance, supernovae explosions are fascinating. A star more massive than our Sun runs…

3 months ago